MIDDLE SCHOOO PLZZZ HEL. Katie is selling candy bars to raise money for her dance club.
She buys the candy bars in packs of 50 for $40.
Katie sells each candy bar for 175% of what she paid for it.
How much profit does Katie make after selling 3 packs of candy bars?

answer: give more info

step-by-step explanation:

, and

for

step-by-step explanation:

we can analyze the pattern at which the terms increase. let us denote , , , so that we can call

note the following:

the pattern: to get the next term value, we just add the next term number (e.g. 1st, 2nd, to the previous term value (term values are the given numbers in the question, 1, 3, 6, 10, 15,

from , to get to , we add

from , to get to , we add

etc.

we need to form a recursive formula, a formula that has the next term as a function of the previous term. so a possible recursive formula can be

, and for